Screen.



Patented Dec. I6, I902. J. E. DUNCAN.

SCREEN. (Appfi'cation filed July 163. 1902.)

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UNITED STATES ATENT OFFICE.

JAMES E. DUNCAN, or JENNINGS, LOUISIANA.

SCREEN.

SPECIFICATION forming part of Letters Patent No. 715,767, dated December 16, 1902.

Application filed July 16, 1902. Serial No. 115,835 (No model.)

To all whom it; may concern.-

Beit known that I, JAMES E. DUNCAN, acitizen of the United States, residing at Jennings, in the parish of Galcasieu and State of Louisiana, have invented a new and useful Screen, of which the following is a specification.

This invention relates to screens for windows and similar places; and the object thereof is to provide a structure which may be easily applied to any window and will prevent the entrance of flies and other insects through the same, though said screen may be conveniently and quickly opened to permit the ready escape of said insects from the room. The preferred embodiment of the invention is illustrated in the accompanying drawings.

and described in the following specification, and said invention will be readily understood therefrom.

In said drawings, Figure 1 is a View in elevation of a portion of the exterior of a Window, showing the improved screen applied thereto. trating the screen'when open. Fig. 3 is a vertical sectional view through Fig. 1. Fig.

4 is a horizontal sectional view through the screen.

Similar numerals of reference designate corresponding parts in all the figures of the drawlngs.

In the embodiment of the invention shown an outer stationary frame 10 is employed that is arranged to be fitted within a window-frame, as shown, and comprises oppositely-disposed side bars 11, connected by end bars 12. One of the side bars 11 is preferably provided with an angle strip 13, slidably mounted upon the same and normally held against movement by fastening devices 14, passing through slots 15, formed in said strip, said fastening devices engaging the bar 11, as clearly shown in Fig. 4.

An inner rectangular frame 16 is hinged at its lower end to the lower end of the frame 10, as shown at 17, said frame 16 being arranged to fit Within the frame 10, which latter frame is provided with suitable stops or abutments 18, against which the frame 16 normally rests. The frame 16 carries a screen 19, preferably formed of wire-netting and extending across the space within the same. Said frame is normally held in its closed po- Fig. 2 is a perspective view illusas desired.

sition bya spring, preferably formed of a mean intermediate cross-bar 21. The ends of the rod are secured to the lower portion of the outer frame 10 on opposite sides of the inner frame, ,the terminals of said rod being inturned, as shown at 22, and engaging the lower end bar 12, while the lower portions of the side bars 20 are fastened by means of eyes 23. The upper portion of this springrod is free, and the cross-bar 21 extends across the upper portion of the screen and bears against the inner frame, thus normally pressing said frame against the outer frame, as clearly shown in Figs. 1 and 3.

When the device isin position, the screen is arranged so that it will open outwardly, but is normally held closed by the spring, and thus no flies or other insects can pass through the same. Should any flies within the room congregate upon the inner face of the screen, it will be apparent that by pressing said screen outwardly the upper end will be open, so that the flies following their natural inclination of ascending will pass over the upper portion of the screen and escape. It will be apparent that by the use of this screen a room may be readily cleared of flies, as they can be driven to the screen, and when it is opened by pressing against it from within the flies can escape. As soon as the pressure is relieved the spring acting against the movable frame will swing the same to closed position. The device as a whole may be inserted in windows of various sizes, as the movable strip 13 may be adjusted It will be understood that the terms stationary and movable as applied to the frames are merely relative terms in order to clearly distinguish between the two, and it is not to be understood in the use of the phrase stationary frame that said frame is stationary with respect to the windowframe, as the entire screen might be movably mounted upon the same.

From the foregoing it is thought that the construction, operation, and many advanbe apparent to those skilled in the art Without further description, and it will be understood that various changes in the size, shape, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a screen, the combination with an open relatively stationary frame arranged to he secured upon a window, of a relatively movable frame hinged at its lower end to the lower end of the stationary frame, and arranged to swing outwardly with respect to the windo\v,and ascreen secured to and extending across the space within the movable frame.

2. In a screen, the combination with an open frame arranged to be secured to a window, of a screen pivoted to the frame and having its upper end movable outwardly with respect to the window, and yielding means for normally holding the screen across the space within the open frame.

3. In a screen, the combination with an open frame, of a screen pivoted to the frame, and yielding means carried by the frame and bearing against the screen for normally holding the same across the space within the open frame.

4. In a screen, the combination with a pair of pivotally-associated frames, one of which is provided with a screen, of a spring secured at both ends to one frame and having an intermediate portion bearing against the other frame to hold said frames together.

5. In a screen, the combination with an open relatively stationary frame arranged to be secured upon a window, of a relatively movable frame hinged at its lower end to the stationary frame, a screen secured to and extending across the space within the movable frame, and a spring carried by the stationary frame to hold the screen across the space within said stationary frame.

6. In a screen, the combination with an outer and an inner frame pivotally connected, said inner frame having a screen, a springrod secured at its ends to opposite sides of the outer frame and extending across and bearing against the inner frame.

7. In a screen, the combination with an outer open frame arranged to be secured to a window, of an inner frame hinged at its lower end to the lower end of the outer frame and being arranged to fitwithin the same, ascreen attached to and extending across the space within the inner frame, an angularly-bent rod-spring secured at its ends to opposite sides of the outer frame contiguous to its lower end, said spring having a cross-bar extending across the upper portion of the inner frame and bearing against the same.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

JAMES E. DUNCAN.

WVi tn esses:

A. H. HUMPHREY, W. MACINTOSH. 

